Physics Waves And Oscillations Level: High School
Consider a traveling wave described by the formula y1 (x,t)= A sin (kx-wt) . This function might represents the lateral displacement of a string . a local electric field , the position of the surface of a body of water , or any of number of other physical manifestations of waves .A) Which one of the following statements about the wave described in the problem introduction is correct ?
a) The wave is traveling in the +x direction .
b) The wave is traveling in the –x direction .
c) The wave is oscillating but not traveling.
d) The wave is traveling but not oscillating .
B) Which of the expression given is a mathematical expression for a wave of the same amplitude that is traveling in the opposite direction ? At time t =0 this new wave should have the same displacement as yi (x,y) , the wave described in the problem introduction .
a) A cos (kx = wt )
b) A cos (kx + wt)
c) A sin (kx – wt)
d) A sin (kx + wt)
C) Find ye(x) and yt(t) . Keep in mind that yt(t) should be a trigonometric function of unit amplitude .
D) Which one of the following statement about the superposition wave
a) The wave is traveling in the +x direction
b) The wave is traveling in the _+ x direction
c) The wave is oscillating but not traveling
d) The wave is traveling but not oscillating
